Product Overview
Cryogenic Liquid Oxygen (LOX) is the cryogenic liquid form of molecular oxygen. It is produced by cooling and compressing atmospheric air, followed by distillation to achieve high purity. As a powerful oxidizing agent, liquid oxygen is widely used in medical, industrial, and aerospace applications due to its high density and efficient storage properties. The stability and purity of liquid oxygen are critical to the performance and safety of the systems that utilize it.
Basic Information
| CAS No. | 7782-44-7 |
| UN No. | UN 1073 (Oxygen, refrigerated liquid) |
Key Attributes & Parameters
| Purity | ≥99.5% (industrial grade), with medical grade up to 99.9%. |
| Boiling Point | -183 °C (-297 °F) at atmospheric pressure. |
| Density | Approximately 1.14 g/mL at boiling point. |
| Appearance | Pale blue, clear, odorless cryogenic liquid. |
| Expansion Ratio | 1 volume of liquid expands to about 860 volumes of gas at 21 °C. |
Features & Advantages
High Storage Efficiency
Stored as a cryogenic liquid, oxygen occupies significantly less volume than in gaseous form, allowing for economical bulk storage and transport.
High Purity & Consistency
Can be produced and maintained at stringent purity levels suitable for sensitive applications, including medical and aerospace uses.
Rapid On‑Demand Supply
Can be quickly vaporized to deliver a continuous, high‑flow supply of gaseous oxygen.
Safe Handling Protocols
Well‑established industry standards for storage, transport, and handling minimize operational risks.
Functional Characteristics
Cryogenic Liquid Oxygen is stored in specially designed vacuum‑insulated containers (cryogenic tanks or cylinders) that minimize heat ingress and evaporation. It is typically vaporized using heat exchangers before being delivered to the point of use. Flow, pressure, and temperature are monitored and controlled to meet specific application requirements. The phase change from liquid to gas provides a reliable and scalable source of high‑purity oxygen.
Primary Application Fields
Medical & Healthcare
Life‑support systems, respiratory therapy, hospital central supply, and emergency oxygen.
Aerospace & Defense
Oxidizer for rocket propulsion, aircraft breathing systems, and ground‑support operations.
Industrial Manufacturing
Metal cutting, welding, glass making, chemical oxidation processes, and water treatment.
Metallurgy
Oxygen enrichment in blast furnaces and steel‑making converters.
Customer Collaboration Case
We partnered with a major steel manufacturer to upgrade their oxygen‑enrichment system. The customer required a high‑volume, uninterrupted supply of high‑purity oxygen to enhance furnace efficiency and reduce emissions. We designed and installed a bulk liquid oxygen storage and vaporization system, including primary and backup cryogenic tanks, automated vaporizers, and a distributed pipeline network. Our solution provided a steady, on‑demand oxygen flow, improving combustion efficiency and reducing fuel consumption. The reliability of our liquid oxygen supply and our technical support enabled the customer to meet production targets while achieving significant cost savings and environmental benefits.
Since its establishment in January 2017, Heze Dongjian Chemical Sales Co., Ltd. has embarked on a journey of rapid growth. Starting with the sale of basic hazardous chemicals, the company, with a registered capital of 20 million yuan, has gradually expanded its business scope through precise market positioning and a pragmatic business approach, forming an integrated business model covering sales, transportation, and technical services. During its development, the company has continuously optimized resource allocation, expanded supply channels, and established a professional transportation fleet, achieving a leap in revenue scale from the millions to nearly a billion yuan. In 2023, it completed the relocation of its address and the optimization of its articles of association. In 2024, it was awarded the A-level tax credit qualification, with a stable workforce of 14 employees, and the company's scale has steadily expanded. Over the years, adhering to the corporate spirit of "development-oriented and continuous innovation", the company has grown from a regional chemical enterprise to a leading force in the national hazardous chemicals sector.
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